Q. A long helical spring having a spring stiffness of 12 kN/m and number of turns 20, breaks into two parts with number of turns 10 each in both the parts. If the two parts are connected in series, then the softness of the resultant spring will be

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Q. The radial distance from the __________ to the clearance circle is called working depth.

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Q. The efficiency of a square threaded screw is maximum if the helix angle is equal to (where φ = Angle of friction)

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Q. In designing thick cylinders, the equation used is

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Q. A double fillet welded joint with parallel fillet weld of length l and leg s is subjected to a tensile force P. Assuming uniform stress distribution, the shear stress in the weld is given by

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Q. Two shafts A and B are made of the same material. The diameter of shaft A is twice as that of shaft B. The power transmitted by the shaft A will be __________ of shaft B.

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Q. Which of the following statement is correct?

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Q. The taper on cotter and slot is made on both the sides.

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Q. Teflon is used for bearings because of

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Q. In designing a flange coupling, the pitch circle diameter of bolts is taken as (where d = Diameter of the shaft)

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Q. The acme threads are usually found on

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Q. A parallel sunk key, made of steel, is equally strong in shearing and crushing.

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Q. In designing a key, it is assumed that the distribution of forces along the length of key

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Q. In a belt drive, the velocity ratio is the inverse ratio of the diameters of driving and driven pulleys.

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Q. In order to have a connecting rod equally strong in buckling about X-axis and Y-axis, the moment of inertia about X-axis should be __________ the moment of inertia about Y-axis.

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Q. The bearing characteristic number in a hydrodynamic bearing depends upon

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Q. A jam nut is a locking device in which

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Q. The difference between the upper limit and lower limit of a dimension is called

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Q. The algebraic difference between the actual size and the corresponding basic size is called actual deviation.

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Q. The stiffness of a closely coiled helical spring subjected to an axial load W is equal to (where G = Modulus of rigidity, and n = Number of active coils)

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